Here's my MWE (this is an actual bibliography item, the draft option is there to show the overfull hbox):
\documentclass[draft]{article}
\usepackage{filecontents}
\begin{filecontents*}{x.bib}
@BOOK{LV12,
title = {Algebraic operads},
publisher = {Springer},
year = {2012},
author = {Loday, Jean-Louis and Vallette, Bruno},
volume = {346},
pages = {xxiv+634},
series = {Grundlehren der Mathematischen Wissenschaften [Fundamental Principles
of Mathematical Sciences]},
address = {Heidelberg},
doi = {10.1007/978-3-642-30362-3},
isbn = {978-3-642-30361-6},
}
\end{filecontents*}
\usepackage{biblatex}
\addbibresource{x.bib}
\begin{document}
\nocite{*}
\printbibliography
\end{document}
This produces:
Overfull \hbox (15.12822pt too wide) in paragraph at lines 27--27
I'm generally aware of how to fix overfull hbox from text I wrote myself, but not when the text is produced by a package. What is the best course of action here? Altering the entry is not an option.